Logitech G502 Best mouse I had to date. Price / Performance I find Top. Positives: - I can the G502 using the supplied software Logitech Gaming Software (also my G710 +) to adjust completely to your own needs. - I have when playing and desktop operating 3 Empfindlichskeitsstufen that light up in a bar. - Looks cool with the bright G button above. - You can attach different weights, so you change the feel of the mouse - Wheel has 2 speeds. Negatives: reminds me actually a nix